suck down

/S AH1 K D AW0 N/
verb
  1. 1

    (idiomatic, figurative, transitive) To drink (or, more rarely, eat) all of something quickly.

  2. 2

    (idiomatic, figurative, transitive) To consume greedily, especially when undeservedly.

  3. 3

    (transitive, slang, vulgar) To give fellatio to.